Home / 12,240.40-16,890.60-8,467.60

Finding the Fourth Proportional to 12,240.40, 16,890.60 and 8,467.60

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Solution

The fourth proportional to 12,240.40, 16,890.60 and 8,467.60 is: 11,684.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.40 : 16,890.60 = 8,467.60 : x
  2. Step 2: Convert to fraction form
    12,240.40/16,890.60 = 8,467.60/x
  3. Step 3: Cross multiply
    12,240.40x = 16,890.60 × 8,467.60
  4. Step 4: Simplify right side
    12,240.40x = 143,022,844.56
  5. Step 5: Solve for x
    x = 143,022,844.56/12,240.40
  6. Step 6: Final answer
    x = 11,684.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.